It’s less hard to imagine when you consider that on-call vets might not have all the diagnostic tools at their disposal, and can’t diagnose much at all if there are not further diagnostics agreed to by the clients (IE, rads, or hauling to a clinic). Veterinarians are human too, and not all chiros are vets and I don’t ever consider the opinion of a chiropractor to be of any merit WRT soundness because most are not specialized in lameness. That’d be like asking an HVAC expert to diagnose why my oil is leaking in my car. Different trades, both mechanical, but very different trades.
I think findeight is right that it might be time to go to a clinic.